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Aerosol Cloud meTeorology Interactions oVer the western ATlantic Experiment

      NASA’s Aerosol Cloud meTeorology Interactions oVer the western ATlantic Experiment (ACTIVATE) project is a five-year project (January 2019 – December 2023) that will provide important globally-relevant data about changes in marine boundary layer cloud systems, atmospheric aerosols and multiple feedbacks that warm or cool the climate. Marine boundary layer clouds play a critical role in Earth’s energy balance and water cycle.

CERES Logo CERES - Clouds and the Earth's Radiant Energy System

      The CERES experiment is one of the highest priority scientific satellite instruments developed for NASA's Earth Observing System (EOS). CERES products include both solar-reflected and Earth-emitted radiation from the top of the atmosphere to the Earth's surface. Cloud properties are determined using simultaneous measurements by other EOS instruments such as the Moderate Resolution Imaging Spectroradiometer (MODIS). Analyses of the CERES data, which build upon the foundation laid by previous missions such as the Earth Radiation Budget Experiment (ERBE), will lead to a better understanding of the role of clouds and the energy cycle in global climate change.

CALIPSO Logo CALIPSO - Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations

      CALIPSO was selected as an Earth System Science Pathfinder satellite mission in December 1998 to address the role of clouds and aerosols in the Earth's radiation budget. NASA Langley Research Center is leading the mission and is providing overall project management, systems engineering, payload mission operations, data validation, processing and archival. The Centre National d'Etudes Spatiales (CNES) is providing a PROTEUS spacecraft, the imaging infrared radiometer (IIR), payload-to-spacecraft integration and spacecraft mission operations. CALIPSO was developed through collaboration between NASA and the French space agency, CNES.

CAPABLE CAPABLE - The Chemistry and Physics Atmospheric Boundary Layer Experiment

      The Chemistry and Physics Atmospheric Boundary Layer Experiment (CAPABLE) is a ground-based observation site created in 2009 that is dedicated to studying atmospheric conditions in the Tidewater region of Virginia.
The site, which is located at NASA’s Langley Research Center, is a collaborative effort between the Science Directorate at NASA Langley, the U.S. Environmental Protection Agency and the Virginia Department of Environmental Quality. Together, these partners operate a suite of instrumentation designed to track and observe pollutants in the Earth’s troposphere.

HSRL thumbnail HSRL - High Spectral Resoluation Lidar

      The HSRL instrument is an innovative technology that is similar to radar; however, with lidar, radio waves are replaced with laser light. Lidar allows researchers to see the vertical dimension of the atmosphere, and the advanced HSRL makes measurements that can even distinguish among different aerosol types and their sources. The HSRL technique takes advantage of the spectral distribution of the lidar return signal to discriminate aerosol and molecular signals and thereby measure aerosol extinction and backscatter independently. It measures aerosol backscatter and depolarization at 532 and 1064 nm and aerosol extinction at 532 nm.

KLASH Logo KLASH - The Mount Kelud Volcanic Ash Measurement Mission

      On February, 13th 2014, the Kelud volcano, located in Indonesia, spewed tons of volcanic materials into the atmosphere, being one of the most powerful eruptions on earth since the Mount Pinatubo eruption in 1991. A team of scientists from NASA’s Langley Research Center and the University of Wyoming mounted a rapid balloon deployment to make in situ measurements in this volcanic plume in order to assess its radiative and climate impacts and provide validation measurements for the CALIPSO space-borne lidar mission.

LARGE Logo LARGE - Langley Aerosol Research Group

      LARGE is based in the Chemistry and Dynamics Branch of the Science Directorate at NASA’s Langley Research Center. The group specializes in making in situ aerosol and cloud measurements and conducts research to improve understanding of atmospheric aerosols and their interactions with water vapor. LARGE also takes part in model and remote sensor validation studies and assessments of the environmental impacts of human activities.

LASE Logo LASE - Lidar Atmospheric Sensing Experiment

      Vaporized water is an invisible gas that is present everywhere in the atmosphere. The distribution of atmospheric water vapor is of fundamental importance to weather and climate, atmospheric radiation studies, global hydrological cycle and atmospheric chemistry. The LASE program was initiated as an effort to produce an autonomous system for measuring water vapor levels from airborne and spaceborne platforms using LIDAR technology.

LITE Logo LITE - Lidar In-space Technology Experiment

      LITE is a three-wavelength backscatter lidar developed by NASA Langley Research Center that flew on the Space Shuttle Discovery in September of 1994.

LiDAR Logo LiDAR - Light Detection and Ranging

      The LiDAR group at NASA Langley Research Center has been developing and applying advanced lidar systems to a broad range of atmospheric investigations. These activities have included the development and application of airborne Differential Absorption LiDAR (DIAL) systems for studies of ozone, water vapor, aerosols and clouds.

SAGE II Logo SAGE II - Stratospheric Aerosol and Gas Experiment II

      The SAGE II mission provided the scientific community with a long-term, global depiction of the distribution of aerosol, ozone, water vapor and nitrogen dioxide. The data provide unique and crucial input to the understanding of global, seasonal to interannual variability in climate and, in particular, trends in stratospheric ozone.

SAGE III Logo SAGE III on M3M - Stratospheric Aerosol and Gas Experiment III on Meтeoр-3M

      The SAGE III mission provided accurate, long-term measurements of ozone, aerosols, water vapor and other key parameters of the Earth's atmosphere. These observations are crucial for providing a better understanding of how natural processes and human activities may influence our climate.